Journal of the Ceramic Association, Japan最新文献_第3页

Immobilization of divalent transition metals from aqueous solutions using crystalline hydrated titania fibers 用结晶水合二氧化钛纤维从水溶液中固定化二价过渡金属

Journal of the Ceramic Association, Japan Pub Date : 1985-01-01 DOI: 10.2109/JCERSJ1950.93.1077_225

Y. Fujiki, T. Sasaki, Y. Komatsu

{"title":"Immobilization of divalent transition metals from aqueous solutions using crystalline hydrated titania fibers","authors":"Y. Fujiki, T. Sasaki, Y. Komatsu","doi":"10.2109/JCERSJ1950.93.1077_225","DOIUrl":"https://doi.org/10.2109/JCERSJ1950.93.1077_225","url":null,"abstract":"From a viewpoint of the treatment of high level radioactive liquid waste , the immobilization of divalent transition metal ions from aqueous solutions was studied by the use of the crystalline hydrated titania (H2Ti2O5• nH2O) fibers as an ion-adsorbent . The each metal ion was saturately adsorbed on the fibrous adsorbent from the aqueous solution of the divalent transition metal acetate. The adsorbed metal ions were immobilized in crystal lattices as main components of various titanate minerals after the sintering treatment. The copper ions were immobilized into the mineral assemblage of rutile, and Cu2TiO3 and Cu3TiO4 phases having a complex crystal structure . Zinc ions were fixed into the mineral assemblage of rutile and a Zn2TiO4 phase of the inverse spinel structure. Each metal ion of manganese, cobalt and nickel was immobilized into the same mineral assemblage of rutile and a MTiO3 (M=Mn, Co, and Ni) phase of the ilmenite structure . Rutile in these immobilizers occurs as a matrix mineral in the largest amount. The leachability of each metal ion in the immobilizers was measured under normal atmospheric and hydrothermal conditions . The results of the former indicated to be very stable with high leach resistance of maximal 3.210-9 gcmd-1 of mangnese ion, and the results of the latter also indicated to be very stable with maximal 9.1109g• cm2d-1 of nickel ion. [Received September 13, 1984]","PeriodicalId":17274,"journal":{"name":"Journal of the Ceramic Association, Japan","volume":"37 8","pages":"225-229"},"PeriodicalIF":0.0,"publicationDate":"1985-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72635338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

ラマン分光法によるCaO-Al2O3-B2O3系ガラスの研究拉曼光谱法对ao - al2o3 - b2o3系玻璃的研究

Journal of the Ceramic Association, Japan Pub Date : 1984-12-01 DOI: 10.2109/JCERSJ1950.92.1072_680

幸平福味, 二郎福永, 吉田直次郎, 将昌井原

{"title":"ラマン分光法によるCaO-Al2O3-B2O3系ガラスの研究","authors":"幸平福味, 二郎福永, 吉田直次郎, 将昌井原","doi":"10.2109/JCERSJ1950.92.1072_680","DOIUrl":"https://doi.org/10.2109/JCERSJ1950.92.1072_680","url":null,"abstract":"CaO-Al2O3-B2O3系ガラスの低ホウ素含有領域における構造をラマンスペクトル法を用い調べた. この領域に存在する特徴的な構造群はアルミネート網目, オルソボーレート群, 2CaO・Al2O3・B2O3結晶類似の構造である. ラマンスペクトルではアルミネート網目によるピークは540cm-1と770cm-1に, オルソボーレート群によるピークは930cm-1に, 2CaO・Al2O3・B2O3結晶に特徴的な構造群のピークは980cm-1に観測される. B2O3を5mol%又は10mol%含むガラスでは, アルミネート網目とオルソボーレート群が主要な構造群であり, 2CaO・Al2O3・B2O3結晶類似の構造も多少共存する. B2O3を20mol%含むガラスでは, アルミネート網目, オルソボーレート群, 2CaO・Al2O3・B2O3結晶類似の構造が主体を占め, B2O325mol%含むガラスでは, オルソボーレート群と2CaO・Al2O3・B2O3結晶類似構造が主体をなす. すなわち, ホウ素含有量が増加するにつれて, アルミネート網目は減少し, 2CaO・Al2O3・B2O3結晶類似の構造が増加する. またAl2O3をCaOで置換するとオルソボーレート群の量は増加する.","PeriodicalId":17274,"journal":{"name":"Journal of the Ceramic Association, Japan","volume":"30 1","pages":"680-685"},"PeriodicalIF":0.0,"publicationDate":"1984-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79668208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Z=1の組成をもつβ-サイアロン熱間加圧焼結体の強度组成Z=1的β-重离子热加压烧结体的强度

Journal of the Ceramic Association, Japan Pub Date : 1984-01-01 DOI: 10.2109/JCERSJ1950.92.45

正気梅林, 和司岸, 英治谷, 和夫小林

{"title":"Z=1の組成をもつβ-サイアロン熱間加圧焼結体の強度","authors":"正気梅林, 和司岸, 英治谷, 和夫小林","doi":"10.2109/JCERSJ1950.92.45","DOIUrl":"https://doi.org/10.2109/JCERSJ1950.92.45","url":null,"abstract":"α-Si3N4, α-Al2O3及びAlNを出発原料にして, 熱間加圧焼結法により製造したβ-サイアロン焼結体の室温及び1400℃における曲げ強度を測定した. β-サイアロン焼結体の製造に用いた混合粉末の組成は, Z=1 (1.8), Z=1 (2.8), Z=1 (4) 及びZ=1 (5.5) である. ここで, 括弧内の数字は, Z=1の組成をもつβ-サイアロンからの酸素の過剰の当量%を示す.(1) Z=1 (5.5) 及びZ=1 (4) は, 十分ち密化したが, Z=1 (2.8) 及びZ=1 (1.8) は, ち密な焼結体とならなかった.(2) 焼結体の組成は, いずれもβ-サイアロンからなるが, Z=1 (4) 及びZ=1 (5.5) から得た焼結体には, 走査型電子顕微鏡観察から, ガラス質粒界相が認められた.(3) Z=1 (4) の室温における曲げ強度は, 55.5kg/mm2と最も高く, 混合粉末の組成がZ=1 (4) より酸素側へ又は窒素側へ移行しても, 焼結体の曲げ強度は, 低下した. Z=1 (5.5), Z=1 (4), Z=1 (2.8) 及びZ=1 (1.8) 焼結体の1400℃曲げ試験で, 各焼結体とも強度の低下は認められなかった.(4) 各焼結体の室温及び1400℃破断は, いずれも各焼結体内部の欠陥 (空孔, 未焼結部分及び粗大粒子の集合部) から始まっていた. 破断のモードは, 室温及び1400℃とも, 粒内破断であった.","PeriodicalId":17274,"journal":{"name":"Journal of the Ceramic Association, Japan","volume":"1 1","pages":"45-51"},"PeriodicalIF":0.0,"publicationDate":"1984-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88871815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

β-サイアロン (Z=3) の窒素ガス圧焼結 β-赛龙(Z=3)氮气压烧结

Journal of the Ceramic Association, Japan Pub Date : 1983-11-01 DOI: 10.2109/JCERSJ1950.92.1072_675

英治谷, 弘道一ノ瀬, 和司岸, 正気梅林, 和夫小林

{"title":"β-サイアロン (Z=3) の窒素ガス圧焼結","authors":"英治谷, 弘道一ノ瀬, 和司岸, 正気梅林, 和夫小林","doi":"10.2109/JCERSJ1950.92.1072_675","DOIUrl":"https://doi.org/10.2109/JCERSJ1950.92.1072_675","url":null,"abstract":"Si3N4, Al2O3, AlNの混合粉末を用いてz=3組成のβ-サイアロン (Si6-zAlzOzN8-z; z=0-4.2) を温度1800°-2000℃, 窒素圧力0.1-4MPaの条件下で雰囲気加圧焼結を行った. 焼結には, 詰め粉としてβ-サイアロンのz=3(+4) (4当量%酸素過剰) 組成に相当するSi3N4, Al2O3, AlNの混合粉末を用いた.z=3(+4) 組成のβ-サイアロンを1800℃, 0.1MPaで焼成した場合, 最高密度3.05g/cm3 (理論密度の99%) の焼結体を得た. また2000℃においてもz=3(+2) 組成のβ-サイアロンは2MPaで2.96g/cm3 (理論密度の96%) の高密度焼結体を得ることができた.β-サイアロン単相の熱分解は, 1800℃では1MPa, 1900℃では2MPa, 2000℃では4MPa以上の窒素圧により抑えることができた. 一方, β-サイアロンとX相からなる2相サイアロンの熱分解は2000℃以上で生じ, 2000℃では4MPa以上の窒素圧により抑えることができた.β-サイアロンの雰囲気加圧焼結には, 詰め粉, 試料中の過剰酸素成分量及び窒素圧の効果が大きいことが明らかになった.","PeriodicalId":17274,"journal":{"name":"Journal of the Ceramic Association, Japan","volume":"1971 1","pages":"675-679"},"PeriodicalIF":0.0,"publicationDate":"1983-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83379747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

加水分解によるSi(OC2H5)4-H2O-C2H5OH溶液の粘度変化と曳糸性水解引起的Si(OC2H5)4-H2O-C2H5OH溶液的粘度变化和曳丝性

Journal of the Ceramic Association, Japan Pub Date : 1982-09-01 DOI: 10.2109/JCERSJ1950.90.1045_555

済夫作花, 寛一神谷, 武史加藤

引用次数: 12

Hydration and Derivatives of Potassium Dititanate Fibers 二钛酸钾纤维的水化及其衍生物

Journal of the Ceramic Association, Japan Pub Date : 1982-01-01 DOI: 10.2109/JCERSJ1950.90.27

Y. Fujiki, T. Ohsaka

引用次数: 4

Direct Observation of the Formation Process of TiN Particles by CVD Method 用CVD法直接观察TiN颗粒的形成过程

Journal of the Ceramic Association, Japan Pub Date : 1981-05-01 DOI: 10.2109/JCERSJ1950.89.1029_277

J. Hojo, A. Kato

引用次数: 14

Effects of water vapor on the electrical conductivity of the interface of semiconductor ceramic-ceramic contacts. 水蒸气对半导体陶瓷-陶瓷触点界面电导率的影响。

Journal of the Ceramic Association, Japan Pub Date : 1979-01-01 DOI: 10.2109/JCERSJ1950.87.1002_112

K. Kawakami, H. Yanagida

引用次数: 21

Microstructure of hot-pressed SiC with AlB2 additive. AlB2添加剂对热压SiC显微组织的影响。

Journal of the Ceramic Association, Japan Pub Date : 1979-01-01 DOI: 10.2109/JCERSJ1950.87.1010_541

Hidehiko Tanaka, Y. Inomata

引用次数: 0

Si-Al-O-Nセラミックス単相の合成 si-al-o-n陶瓷单相的合成

Journal of the Ceramic Association, Japan Pub Date : 1978-11-01 DOI: 10.2109/JCERSJ1950.86.999_526

護三友, 信行倉元, 正幸堤, 弘茂鈴木

引用次数: 23